Electromagnetic inductive touch panel and drive detection method thereof and coordinate input apparatus
US9262034B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 22, 2014 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Oct 1, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04162
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the invention provide an electromagnetic inductive touch panel for detecting a touch position of an electromagnetic stylus including a first resonant circuit and a second resonant circuit, the electromagnetic inductive touch panel including: a plurality of first coils extending in a first direction, wherein at least one of the first coils emits a first electromagnetic signal at a first frequency, and the first resonant circuit receives the first electromagnetic signal and then resonates to generate a first reflected signal at the first frequency; and a plurality of second coils extending in a second direction, wherein at least one of the second coils emits a second electromagnetic signal at a second frequency, and the second resonant circuit receives the second electromagnetic signal and then resonates to generate a second reflected signal at the second frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.